Okay just an experiment about putting some color (even if in this case it's grey)

I only used traditionnal tools as I already said that I don't have anything to work with on my PC.

I used prismacolor fine markers for the inking, grey prismacolor markers for the main color and the shadow and white paint for the highlights (but I don"t think it can be really see)

Oh and by the way, it's still my character Dorian ^^ but much more improved